wallet: invalidate node proxy cache when reconnecting

src/wallet/node_rpc_proxy.cpp

@@ -47,6 +47,17 @@ NodeRPCProxy::NodeRPCProxy(epee::net_utils::http::http_simple_client &http_clien
   , m_dynamic_per_kb_fee_estimate_grace_blocks(0)
 {}
 
+void NodeRPCProxy::invalidate()
+{
+  m_height = 0;
+  m_height_time = 0;
+  for (size_t n = 0; n < 256; ++n)
+    m_earliest_height[n] = 0;
+  m_dynamic_per_kb_fee_estimate = 0;
+  m_dynamic_per_kb_fee_estimate_cached_height = 0;
+  m_dynamic_per_kb_fee_estimate_grace_blocks = 0;
+}
+
 boost::optional<std::string> NodeRPCProxy::get_height(uint64_t &height)
 {
   const time_t now = time(NULL);

src/wallet/node_rpc_proxy.h

@@ -41,6 +41,8 @@ class NodeRPCProxy
 public:
   NodeRPCProxy(epee::net_utils::http::http_simple_client &http_client, boost::mutex &mutex);
 
+  void invalidate();
+
   boost::optional<std::string> get_height(uint64_t &height);
   void set_height(uint64_t h);
   boost::optional<std::string> get_earliest_height(uint8_t version, uint64_t &earliest_height);

src/wallet/wallet2.cpp

@@ -2286,6 +2286,7 @@ bool wallet2::check_connection(uint32_t *version, uint32_t timeout)
 
   if(!m_http_client.is_connected())
   {
+    m_node_rpc_proxy.invalidate();
     if (!m_http_client.connect(std::chrono::milliseconds(timeout)))
       return false;
   }